PHP实现操作redis的封装类完整实例

本文实例讲述了PHP实现操作redis的封装类。分享给大家供大家参考，具体如下：

null,// 只支持一台 Master
    'slave'=>array(),// 可以有多台 Slave
  );
  
  public function __construct($isUseCluster=false){
    $this->_isUseCluster = $isUseCluster;
  }
  
  public function connect($config=array('host'=>'127.0.0.1','port'=>6379), $isMaster=true){
    // default port
    if(!isset($config['port'])){
      $config['port'] = 6379;
    }
    // 设置 Master 连接
    if($isMaster){
      $this->_linkHandle['master'] = new Redis();
      $ret = $this->_linkHandle['master']->pconnect($config['host'],$config['port']);
    }else{
      // 多个 Slave 连接
      $this->_linkHandle['slave'][$this->_sn] = new Redis();
      $ret = $this->_linkHandle['slave'][$this->_sn]->pconnect($config['host'],$config['port']);
      ++$this->_sn;
    }
    return $ret;
  }
  
  public function close($flag=2){
    switch($flag){
      // 关闭 Master
      case 0:
 $this->getRedis()->close();
      break;
      // 关闭 Slave
      case 1:
 for($i=0; $i<$this->_sn; ++$i){
   $this->_linkHandle['slave'][$i]->close();
 }
      break;
      // 关闭所有
      case 1:
 $this->getRedis()->close();
 for($i=0; $i<$this->_sn; ++$i){
   $this->_linkHandle['slave'][$i]->close();
 }
      break;
    }
    return true;
  }
  
  public function getRedis($isMaster=true,$slaveOne=true){
    // 只返回 Master
    if($isMaster){
      return $this->_linkHandle['master'];
    }else{
      return $slaveOne ? $this->_getSlaveRedis() : $this->_linkHandle['slave'];
    }
  }
  
  public function set($key, $value, $expire=0){
    // 永不超时
    if($expire == 0){
      $ret = $this->getRedis()->set($key, $value);
    }else{
      $ret = $this->getRedis()->setex($key, $expire, $value);
    }
    return $ret;
  }
  
  public function get($key){
    // 是否一次取多个值
    $func = is_array($key) ? 'mGet' : 'get';
    // 没有使用M/S
    if(! $this->_isUseCluster){
      return $this->getRedis()->{$func}($key);
    }
    // 使用了 M/S
    return $this->_getSlaveRedis()->{$func}($key);
  }

  
  public function setnx($key, $value){
    return $this->getRedis()->setnx($key, $value);
  }
  
  public function remove($key){
    // $key => "key1" || array('key1','key2')
    return $this->getRedis()->delete($key);
  }
  
  public function incr($key,$default=1){
    if($default == 1){
      return $this->getRedis()->incr($key);
    }else{
      return $this->getRedis()->incrBy($key, $default);
    }
  }
  
  public function decr($key,$default=1){
    if($default == 1){
      return $this->getRedis()->decr($key);
    }else{
      return $this->getRedis()->decrBy($key, $default);
    }
  }
  
  public function clear(){
    return $this->getRedis()->flushDB();
  }
  
  
  private function _getSlaveRedis(){
    // 就一台 Slave 机直接返回
    if($this->_sn <= 1){
      return $this->_linkHandle['slave'][0];
    }
    // 随机 Hash 得到 Slave 的句柄
    $hash = $this->_hashId(mt_rand(), $this->_sn);
    return $this->_linkHandle['slave'][$hash];
  }
  
  private function _hashId($id,$m=10)
  {
    //把字符串K转换为 0～m-1 之间的一个值作为对应记录的散列地址
    $k = md5($id);
    $l = strlen($k);
    $b = bin2hex($k);
    $h = 0;
    for($i=0;$i<$l;$i++)
    {
      //相加模式HASH
      $h += substr($b,$i*2,2);
    }
    $hash = ($h*1)%$m;
    return $hash;
  }
  
  public function lpush($key,$value){
    return $this->getRedis()->lpush($key,$value);
  }
  
  public function lpop($key){
    return $this->getRedis()->lpop($key);
  }
  
  public function lrange($key,$start,$end){
    return $this->getRedis()->lrange($key,$start,$end);  
  }
  
  public function hset($name,$key,$value){
    if(is_array($value)){
      return $this->getRedis()->hset($name,$key,serialize($value));  
    }
    return $this->getRedis()->hset($name,$key,$value);
  }
  
  public function hget($name,$key = null,$serialize=true){
    if($key){
      $row = $this->getRedis()->hget($name,$key);
      if($row && $serialize){
 unserialize($row);
      }
      return $row;
    }
    return $this->getRedis()->hgetAll($name);
  }
  
  public function hdel($name,$key = null){
    if($key){
      return $this->getRedis()->hdel($name,$key);
    }
    return $this->getRedis()->hdel($name);
  }
  
  public function multi(){
    return $this->getRedis()->multi();  
  }
  
  public function exec(){
    return $this->getRedis()->exec();  
  }
}// End Class
// ================= TEST DEMO =================
// 只有一台 Redis 的应用
$redis = new RedisCluster();
$redis->connect(array('host'=>'127.0.0.1','port'=>6379));
/
/
//  var_dump($redis->get('id'));

希望本文所述对大家PHP程序设计有所帮助。